Building decoration wall painting device

Abstract

The invention relates to a wall painting device for building decoration, and relates to the technical field of building decoration. The device comprises a cart, a storage box and a painting cylinder, the storage box is arranged on the cart, the storage box communicates with a hollow pipe through a hose, the painting cylinder communicates with the hollow pipe, a plurality of discharging holes are formed in the side wall of the painting cylinder in a penetrating mode, the cart is connected with a mounting plate through a lifting assembly, the hollow pipe is arranged on the mounting plate, and the lifting assembly is used for driving the mounting plate to move up and down. And a cleaning cylinder is arranged on the hollow pipe, is parallel to the painting cylinder and is positioned below the painting cylinder. The wall surface painting device has the effects of cleaning the wall surface and enabling the uniformity of wall surface painting to be better.

Description

Technical Field

[0001] The present application relates to the field of building decoration, and in particular to a wall painting device for building decoration. Background Art

[0002] During the decoration process, in order to make the wall surface more exquisite and smooth, the wall surface of the building needs to be painted, and this process usually requires the use of a wall painting device.

[0003] In the related art, a Chinese patent with the authorization announcement number CN217400251U discloses a wall painting device for building decoration. It includes a base plate, an air compressor, a first hose, a barrel, a guide block, a buckle, a lid, etc. The air compressor is installed on the rear side of the top of the base plate, the front side of the top of the base plate is connected to the barrel, and the top of the barrel is connected to the lid. By turning on the air compressor, the air compressor injects air into the barrel through the first hose, so that the air squeezes the paint in the barrel, so that the paint flows to the roller brush through the second hose and the conduit, and then the roller brush is slid against the wall to achieve wall painting.

[0004] Dust and other impurities are easily attached to the wall. When the roller brush rolls on the wall, the impurities will be blocked between the wall and the roller brush, causing the paint to stick to the impurities instead of the wall, resulting in uneven painting. Therefore, this needs to be improved. Summary of the invention

[0005] In order to improve the problem that impurities on the wall obstruct the wall, making it impossible for paint to be applied on the wall, resulting in uneven painting, the present application provides a building decoration wall painting device.

[0006] The present application provides a building decoration wall painting device adopts the following technical solution: A wall painting device for building decoration, comprising: Cart; A material storage box is arranged on the cart, and a hose is connected to the material storage box; A mounting plate is arranged on the cart via a lifting assembly, and the lifting assembly is used to drive the mounting plate to move up and down; A hollow tube is arranged on the mounting plate, one end of the hollow tube is connected to an end of the hose away from the storage box; A brush cylinder is arranged on the hollow tube and communicated with the hollow tube, and a plurality of discharge holes are formed through the side wall of the brush cylinder; A cleaning cylinder is arranged on the hollow tube, the cleaning cylinder is parallel to the brush cylinder, and the cleaning cylinder is located below the brush cylinder.

[0007] By adopting the above technical solution, when in use, the cart is moved to move the paint barrel to the wall to be painted, and the paint barrel is abutted against the wall, and then the storage box is filled with wall paint. The paint enters the hollow tube through the hose, and then flows from the hollow tube to the paint barrel, and finally flows out from the discharge hole and adheres to the wall.

[0008] Start the lifting assembly and drive the mounting plate to move from top to bottom, so that the paint cylinder rolls and slides on the wall to paint the wall. During the movement of the paint cylinder, the cleaning cylinder also abuts against the wall, and the hollow tube rolls and slides on the wall synchronously with the cleaning cylinder. Since the cleaning cylinder is located below the paint cylinder, the cleaning cylinder cleans the wall on the moving path of the paint cylinder, so that the wall subsequently painted by the paint cylinder is cleaned by the cleaning cylinder, which makes it less likely to cause uneven painting due to impurities when applying the paint, thereby improving the painting quality.

[0009] Optionally, a sponge is provided on the brush tube.

[0010] By adopting the above technical solution, when the paint in the hollow tube flows out from the discharge hole, it will be absorbed by the sponge. The sponge has good water absorption and softness, so that the entire sponge is soaked with paint, so that the paint can be evenly applied while reducing damage to the wall.

[0011] Optionally, a nozzle is connected to the side wall of the hollow tube, and the nozzle is located between the brushing cylinder and the cleaning cylinder.

[0012] By adopting the above technical solution, after the paint enters the hollow tube from the hose, part of the paint enters the paint barrel and flows out from the discharge hole and adheres to the wall, while the other part of the paint is sprayed on the wall through the nozzle, and the nozzle is located below the paint barrel, that is, the sprayed paint is located in front of the moving direction of the paint barrel, so that the paint barrel will pass through the wall sprayed with paint while carrying the paint itself, so that the coating of the wall paint is more uniform, and the situation that the paint barrel itself has less paint and causes uneven coating will not occur.

[0013] Optionally, a brush is provided on the cleaning cylinder.

[0014] By adopting the above technical solution, the brush cleans the wall, increasing the friction of the wall surface, making it easier to clean impurities. The brush can also be charged with static electricity and absorb dust through static electricity, effectively preventing dust from flying around, thereby keeping the working environment clean.

[0015] Optionally, a collection box with an upward opening is provided below the cleaning cylinder, and the collection box is used to collect impurities on the cleaning cylinder. A mounting rod is fixed to the hollow tube, and the collection box is hinged to the mounting rod.

[0016] By adopting the above technical solution, when the brush with impurities turns to the opening of the collection box, the brush with impurities is vertically downward, so that the impurities fall into the collection box, thereby cleaning the impurities on the cleaning cylinder and collecting the impurities, so that the impurities will not fall directly on the ground, keeping the working environment clean.

[0017] Optionally, a plurality of cleaning rods are provided in the collection box, and the brush can pass through between adjacent cleaning rods.

[0018] By adopting the above technical solution, when the brush moves to the opening of the collection box with impurities, the brush passes through a plurality of cleaning rods, so that the cleaning rods scrape between the brushes, thereby facilitating the impurities to fall off the brush and achieving cleaning of the brush.

[0019] Optionally, a rotating motor is provided on the mounting plate, an output end of the rotating motor is connected to an end of the hollow tube close to the hose, and the rotating motor is used to drive the hollow tube to swing towards or away from the mounting plate.

[0020] By adopting the above technical solution, the rotating motor is started to drive the hollow tube to rotate, so that the end of the hollow tube swings up and down with the brush tube, the nozzle and the cleaning tube to adjust the angles of the brush tube and the cleaning tube so that both the brush tube and the cleaning tube can contact the wall.

[0021] Optionally, the lifting assembly includes a plurality of linkage parts, which are arranged in sequence along the vertical direction, and the adjacent linkage parts are connected end to end, and the linkage parts include two connecting rods, the two connecting rods are cross-arranged, the middle parts of the two connecting rods are hinged, the top ends of the connecting rods are hinged to the bottom ends of the upper connecting rods, the bottom end of one of the connecting rods of the lowest linkage part is hinged to the trolley, and the bottom end of the other connecting rod is slidably connected to the trolley.

[0022] By adopting the above technical solution, one of the connecting rods of the lowest linkage part is driven to slide on the cart, while the position of the other connecting rod on the cart remains unchanged, so that the distance between the bottom ends of the two connecting rods changes, but the middle parts of the two connecting rods are connected, so that the connecting rod rotates, driving the connection between the two connecting rods to move up and down to meet the distance between the two connecting rods. The connection between the two connecting rods moves up and down, which drives the top end of the connecting rod to move synchronously, thereby realizing the extension and retraction of a single linkage part.

[0023] When the connection of the two connecting rods moves up and down, the angle between the two connecting rods changes, thereby driving the distance between the two connecting rods of the upper linkage part to change, so that the upper linkage part is synchronously extended and retracted, and so on. The entire lifting assembly rises or falls, so as to achieve the purpose of the installation plate driving the paint barrel to automatically paint on the wall.

[0024] Optionally, the cart comprises: A movable plate, on which the material storage box and the lifting assembly are arranged; Two driving wheels are rotatably connected to the bottom of the moving plate, and the two driving wheels are symmetrically arranged with the central axis of the moving plate as an axis; Two steering wheels, the two steering wheels are arranged symmetrically with the central axis of the moving plate as the axis, the steering wheels are connected to the moving plate through a steering rod, the steering wheels are rotatably connected to the steering rod, the steering rod is rotatably connected to the moving plate, the steering rod can move in a direction close to or away from the central axis of the moving plate, and the steering rod is rotated to drive the two steering wheels to move in the same direction; A steering assembly is arranged on the movable plate, the steering assembly is connected to the steering rod, and the steering assembly is used to drive the steering rod to rotate.

[0025] By adopting the above technical solution, the movable plate is pushed so that the driving wheel and the steering wheel roll and slide on the ground, thereby facilitating the moving of the painting barrel to a proper position for painting the wall surface to be painted.

[0026] Optionally, the steering assembly includes: A steering motor, arranged on the moving plate; A rotating rod, one end of which is fixed to the output end of the steering motor; A driven rod, one end of which is hinged to the steering rod, and the other end of which is hinged to an end of the rotating rod away from the steering motor.

[0027] By adopting the above technical solution, when the cart needs to turn, the steering motor is driven to rotate the rotating rod, driving the driven rod to move in the direction close to or away from the steering motor. Since one end of the driven rod is connected to the steering rod, the driven rod rotates around the connection between the driven rod and the rotating rod to meet the distance between the rotating rod and the connection point between the driven rod and the steering rod.

[0028] The distance between the rotating rod and the driven rod changes, thereby driving the steering rod to move synchronously toward or away from the steering motor, realizing the swing of the steering rod, driving the two steering wheels to deflect the same angle at the same time, so as to achieve the left or right turn of the entire moving plate.

[0029] In summary, the present application includes at least one of the following beneficial effects: 1. When in use, the paint in the storage box enters the paint barrel through the hose and the hollow tube, and finally flows out from the discharge hole and adheres to the wall surface. Then the lifting assembly is started to drive the mounting plate to move from top to bottom, so that the paint barrel rolls and slides on the wall surface to achieve painting of the wall surface. During the movement of the paint barrel, the cleaning barrel also abuts against the wall surface, and the hollow tube brings the cleaning barrel to roll and slide on the wall surface synchronously, so that the cleaning barrel cleans the wall surface on the moving path of the paint barrel, so that the wall surface painted by the subsequent paint barrel is cleaned by the cleaning barrel, so that it is not easy to cause uneven painting due to impurities when applying the paint, thereby improving the painting quality; 2. When the cart needs to turn, the steering motor is driven to rotate the rotating rod, which drives the driven rod to move closer to or away from the steering motor. Since one end of the driven rod is connected to the steering rod, the driven rod rotates around the connection between the driven rod and the rotating rod to meet the distance between the rotating rod and the connection point between the driven rod and the steering rod. The distance between the rotating rod and the driven rod changes, which drives the steering rod to move synchronously closer to or away from the steering motor, realizing the swing of the steering rod, and driving the two steering wheels to deflect at the same angle at the same time, so as to achieve the left or right turn of the entire moving plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of a wall painting device for building decoration according to an embodiment of the present application; Figure 2 It is a structural schematic diagram of the bottom of the moving plate; Figure 3 This is a schematic diagram of the structure on the mounting plate.

[0031] In the figure: 10, cart; 11, moving plate; 111, cylinder; 112, storage box; 12, driving wheel; 13, steering wheel; 14, steering rod; 20, steering assembly; 21, steering motor; 22, rotating rod; 23, driven rod; 30, lifting assembly; 31, linkage; 311, connecting rod; 40, mounting plate; 41, rotating motor; 50, hose; 60, hollow tube; 70, brush cylinder; 71, discharge hole; 72, sponge; 80, cleaning cylinder; 81, brush; 90, nozzle; 110, mounting rod; 120, collecting box; 130, cleaning rod. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-3 This application is described in further detail.

[0033] The present application embodiment discloses a wall painting device for building decoration. Figure 1 and Figure 2The wall painting device for building decoration includes a cart 10, a storage box 112 and a paint barrel 70. The storage box is placed on the cart 10. The storage box 112 is full of wall paint. The storage box 112 is connected to a hose 50. The hose 50 is provided with a pump for pumping the paint in the storage box 112 into the hose 50. One end of the hose 50 away from the storage box 112 is connected to the paint barrel 70. A discharge hole 71 is opened on the side wall of the paint barrel 70, and a sponge 72 is sleeved on the paint barrel 70.

[0034] During operation, the trolley 10 is moved so that the paint barrel 70 is moved to the wall to be painted, and the sponge 72 is placed against the wall. The paint pump is started to draw the paint into the hose 50, and then the paint enters the paint barrel 70 from the hose 50, and finally flows out from the discharge hole 71, and is then absorbed by the sponge 72. The sponge 72 has good water absorption and softness, so that the entire sponge 72 is soaked with paint. Then the paint barrel 70 is moved so that the sponge 72 rolls and slides on the wall to achieve painting of the wall.

[0035] Reference Figure 1 and Figure 3 To facilitate the movement of the cart 10 to the designated position, the cart 10 includes a moving plate 11, two driving wheels 12 and two steering wheels 13. The storage box 112 is fixed on the moving plate 11. The two driving wheels 12 are rotatably connected to the bottom of the moving plate 11. The two driving wheels 12 are symmetrically arranged with the central axis of the moving plate 11 as the axis, and the two steering wheels 13 are also symmetrically arranged with the central axis of the moving plate 11 as the axis, that is, the two driving wheels 12 and the two steering wheels 13 are respectively distributed at the four corners of the moving plate 11.

[0036] Reference Figure 1 and Figure 3 A steering rod 14 is provided on the bottom wall of the movable plate 11. The steering rod 14 is a C-shaped rod. The steering rod 14 is symmetrically arranged with the central axis of the movable plate 11 as the axis, and both ends of the steering rod 14 are rotatably connected to the movable plate 11, that is, the steering rod 14 can deflect in the horizontal plane toward or away from the central axis of the movable plate 11.

[0037] Reference Figure 1 and Figure 3 A steering assembly 20 is provided on the moving plate 11. The steering assembly 20 is connected to the steering rod 14 and is used to drive the steering rod 14 to rotate. Specifically, the steering assembly 20 includes a steering motor 21, a rotating rod 22 and a driven rod 23. The steering motor 21 is installed at the bottom of the moving plate 11 by bolts. One end of the rotating rod 22 is fixed to the output end of the steering motor 21. The rotating motor 41 is used to drive the rotating rod 22 to rotate in the vertical direction. One end of the driven rod 23 is hinged to the steering rod 14, and the other end is hinged to the end of the rotating rod 22 away from the steering motor 21.

[0038] The moving plate 11 is pushed to make the driving wheel 12 and the steering wheel 13 roll and slide on the ground, so as to facilitate moving the paint barrel 70 to an appropriate position. When the cart 10 needs to turn, the steering motor 21 is driven to rotate the rotating rod 22, driving the driven rod 23 to move toward or away from the steering motor 21. Since one end of the driven rod 23 is connected to the steering rod 14, the driven rod 23 rotates around the connection point between the driven rod 23 and the rotating rod 22 to meet the distance between the rotating rod 22 and the connection point between the driven rod 23 and the steering rod 14. The distance between the rotating rod 22 and the driven rod 23 changes, thereby driving the steering rod 14 to move synchronously toward or away from the steering motor 21, realizing the swing of the steering rod 14, driving the two steering wheels 13 to deflect the same angle at the same time, so as to achieve the left or right turn of the entire movable plate 11.

[0039] Reference Figure 1 and Figure 2 In order to realize automatic painting of the paint barrel 70 on the wall, a lifting assembly 30 is provided on the top wall of the movable plate 11, and a mounting plate 40 is provided on the top of the lifting assembly 30. The end of the hose 50 away from the material storage box 112 extends to the mounting plate 40 and is connected with a hollow tube 60. The end of the hollow tube 60 away from the hose 50 is connected with the paint barrel 70. A support block is fixed on the mounting plate 40, and the hollow tube 60 is placed on the support block. A rotating motor 41 is installed on the mounting plate 40 by bolts. The output end of the rotating motor 41 is connected to the end of the hollow tube 60 close to the hose 50. The rotating motor 41 is used to drive the hollow tube 60 to swing in a direction close to or away from the mounting plate 40.

[0040] When in use, the rotating motor 41 is first started to adjust the angle of the hollow tube 60 so that the sponge 72 on the paint barrel 70 can abut against the wall surface, and then the hose 50 delivers the paint into the hollow tube 60, and then the paint enters the paint barrel 70 through the hollow tube 60, and finally flows out from the discharge hole 71 and adheres to the wall surface. Then the lifting assembly 30 is started to drive the mounting plate 40 to move from top to bottom, so that the paint barrel 70 rolls and slides on the wall surface to achieve painting of the wall surface.

[0041] Reference Figure 1 and Figure 2 The lifting assembly 30 includes a plurality of linkage members 31, which are arranged in sequence along the vertical direction, and the adjacent linkage members 31 are connected end to end. The linkage member 31 includes two connecting rods 311, which are cross-arranged, and the middle parts of the two connecting rods 311 are hinged. The top of the connecting rod 311 is hinged to the bottom end of the upper connecting rod 311, and the bottom end of one of the connecting rods 311 of the lowest linkage member 31 is hinged to the moving plate 11, and the bottom end of the other connecting rod 311 is slidably connected to the moving plate 11.

[0042] Reference Figure 1 and Figure 2 , a cylinder 111 is installed on the moving plate 11, and the output end of the cylinder 111 is hinged with a connecting rod 311 slidably connected to the moving plate 11, and the cylinder 111 can drive the connecting rod 311 to move closer to or away from another connecting rod 311 on the moving plate 11. When the cylinder 111 drives the connecting rod 311 to move, the position of the other connecting rod 311 on the moving plate 11 on the cart 10 remains unchanged, so that the distance between the bottom ends of the two connecting rods 311 changes, but the middle parts of the two connecting rods 311 are connected, so that the connecting rod 311 rotates, driving the connection of the two connecting rods 311 to move up and down to meet the distance between the two connecting rods 311, and the connection of the two connecting rods 311 moves up and down, that is, driving the top of the connecting rod 311 to move synchronously, realizing the extension and retraction of the single linkage 31.

[0043] When the connection of the two connecting rods 311 moves up and down, the angle between the two connecting rods 311 changes, thereby driving the distance between the two connecting rods 311 of the upper linkage member 31 to change, so that the upper linkage member 31 is synchronously extended and retracted, and so on. The entire lifting assembly 30 is raised or lowered, so as to achieve the purpose of the mounting plate 40 driving the paint barrel 70 to automatically paint on the wall.

[0044] Reference Figure 1 and Figure 2 In order to improve the quality of painting, a cleaning cylinder 80 is connected to the side wall of the hollow tube 60 through a mounting rod 110. The cleaning cylinder 80 is parallel to the painting cylinder 70, and the end of the cleaning cylinder 80 is rotatably connected to the fixing rod. The cleaning cylinder 80 is located below the painting cylinder 70, and a brush 81 is sleeved on the cleaning cylinder 80.

[0045] When the painting cylinder 70 moves on the wall, the brush 81 on the cleaning cylinder 80 also contacts the wall, and the hollow tube 60 rolls and slides on the wall with the cleaning cylinder 80. Because the cleaning cylinder 80 is located below the painting cylinder 70, the brush 81 on the cleaning cylinder 80 can clean the wall on the moving path of the painting cylinder 70, so that the wall subsequently painted by the painting cylinder 70 is cleaned by the cleaning cylinder 80, which makes it less likely to cause uneven painting due to impurities when applying the paint, thereby improving the painting quality.

[0046] Reference Figure 1 and Figure 2 In order to prevent impurities from falling randomly and being difficult to clean, a collection box 120 with an upward opening is provided below the cleaning cylinder 80. The collection box 120 is hinged on the mounting rod 110. A plurality of cleaning rods 130 are provided in the collection box 120. The plurality of cleaning rods 130 are arranged at intervals along the length direction of the cleaning cylinder 80. The cleaning rods 130 are vertically arranged, and the brush 81 can pass through between adjacent cleaning rods 130.

[0047] When the brush 81 with impurities attached to it moves to the opening of the collection box 120, the brush 81 with impurities is vertically downward, and the cleaning cylinder 80 continues to rotate, so that the brush 81 passes through a plurality of cleaning rods 130, that is, the cleaning rods 130 scrape between the brushes 81, so that the impurities fall off the brush 81, and the brush 81 is cleaned. The fallen impurities fall into the collection box 120 for collection, so that the impurities will not fall directly on the ground, and the working environment is kept clean.

[0048] The collecting box 120 is hinged on the mounting rod 110, so that the collecting box 120 is always opened upward under the action of gravity. When the collecting box 120 is full of impurities and needs to be cleaned, the collecting box 120 can be directly turned to tilt the collecting box 120 to dump out the impurities, which is convenient to operate.

[0049] Reference Figure 1 and Figure 2 In order to further improve the uniformity of wall painting, a nozzle 90 is connected to the side wall of the hollow tube 60, and the nozzle 90 is located between the paint barrel 70 and the cleaning barrel 80. When the paint enters the hollow tube 60 from the hose 50, a part of the paint enters the paint barrel 70 and flows out from the discharge hole 71 to adhere to the wall surface, while the other part of the paint is sprayed on the wall surface through the nozzle 90, and the nozzle 90 is located below the paint barrel 70, that is, the sprayed paint is located in front of the moving direction of the paint barrel 70, so that the paint barrel 70 will pass through the wall surface sprayed with paint while carrying the paint itself, so that the wall paint is more evenly coated, and there will be no situation where the paint barrel 70 itself has less paint, resulting in uneven coating.

[0050] The implementation principle of the wall painting device for building decoration in the embodiment of the present application is as follows: when in use, the cart 10 is moved to move the paint barrel 70 to the wall to be painted, and the paint barrel 70 is abutted against the wall, and then the storage box 112 is filled with wall paint, and the paint enters the hollow tube 60 through the hose 50, and then flows from the hollow tube 60 to the paint barrel 70, and finally flows out from the discharge hole 71 and adheres to the wall. Start the lifting assembly 30 and drive the mounting plate 40 to move from top to bottom, so that the paint barrel 70 rolls and slides on the wall surface to paint the wall surface. During the movement of the paint barrel 70, the cleaning barrel 80 also abuts against the wall surface, and the hollow tube 60 rolls and slides on the wall surface with the cleaning barrel 80. Since the cleaning barrel 80 is located below the paint barrel 70, the cleaning barrel 80 cleans the wall surface on the moving path of the paint barrel 70, so that the wall surface subsequently painted by the paint barrel 70 is cleaned by the cleaning barrel 80, which makes it less likely to cause uneven painting due to impurities when applying the paint, thereby improving the painting quality.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wall painting device for building decoration, characterized in that: include: Cart (10); A material storage box (112) is arranged on the cart (10), and a hose (50) is connected to the material storage box (112); A mounting plate (40) is arranged on the cart (10) via a lifting assembly (30), wherein the lifting assembly (30) is used to drive the mounting plate (40) to move up and down; A hollow tube (60) is disposed on the mounting plate (40), one end of the hollow tube (60) being in communication with an end of the hose (50) away from the material storage box (112); A brush cylinder (70) is disposed on the hollow tube (60) and communicated with the hollow tube (60). A plurality of discharge holes (71) are formed through the side wall of the brush cylinder (70); The cleaning cylinder (80) is arranged on the hollow tube (60), the cleaning cylinder (80) is parallel to the brush cylinder (70), and the cleaning cylinder (80) is located below the brush cylinder (70).

2. The building decoration wall painting device according to claim 1 is characterized in that: The brush cylinder (70) is sleeved with a sponge (72).

3. The building decoration wall painting device according to claim 1 is characterized in that: A nozzle (90) is connected to the side wall of the hollow tube (60), and the nozzle (90) is located between the brush cylinder (70) and the cleaning cylinder (80).

4. The building decoration wall painting device according to claim 1 is characterized in that: The cleaning cylinder (80) is sleeved with a brush (81).

5. The building decoration wall painting device according to claim 4 is characterized in that: A collection box (120) with an opening facing upward is provided below the cleaning cylinder (80), and the collection box (120) is used to collect impurities on the cleaning cylinder (80). A mounting rod (110) is fixed to the hollow tube (60), and the collection box (120) is hinged to the mounting rod (110).

6. The building decoration wall painting device according to claim 5 is characterized in that: A plurality of cleaning rods (130) are arranged in the collection box (120), and the brush (81) can pass between adjacent cleaning rods (130).

7. The building decoration wall painting device according to claim 1 is characterized in that: The mounting plate (40) is provided with a rotating motor (41), the output end of the rotating motor (41) is connected to one end of the hollow tube (60) close to the hose (50), and the rotating motor (41) is used to drive the hollow tube (60) to swing in a direction close to or away from the mounting plate (40).

8. The building decoration wall painting device according to claim 1 is characterized in that: The lifting assembly (30) comprises a plurality of linkage members (31), wherein the plurality of linkage members (31) are arranged in sequence along a vertical direction, and the ends of adjacent linkage members (31) are connected, and the linkage members (31) comprise two connecting rods (311), wherein the two connecting rods (311) are cross-arranged, the middle parts of the two connecting rods (311) are hinged, the top ends of the connecting rods (311) are hinged to the bottom ends of the upper connecting rods (311), the bottom end of one of the connecting rods (311) of the lowest linkage member (31) is hinged to the trolley (10), and the bottom end of the other connecting rod (311) is slidably connected to the trolley (10).

9. The building decoration wall painting device according to claim 1, characterized in that: The cart (10) comprises: A movable plate (11), the material storage box (112) and the lifting assembly (30) are both arranged on the movable plate (11); Two driving wheels (12) are rotatably connected to the bottom of the moving plate (11), and the two driving wheels (12) are symmetrically arranged with the central axis of the moving plate (11) as an axis; Two steering wheels (13), the two steering wheels (13) are arranged symmetrically with the central axis of the movable plate (11), the steering wheels (13) are connected to the movable plate (11) via a steering rod (14), the steering wheels (13) are rotatably connected to the steering rod (14), the steering rod (14) is rotatably connected to the movable plate (11), the steering rod (14) can move in a direction close to or away from the central axis of the movable plate (11), and the steering rod (14) is rotated to drive the two steering wheels (13) to move in the same direction; A steering assembly (20) is arranged on the movable plate (11); the steering assembly (20) is connected to the steering rod (14); and the steering assembly (20) is used to drive the steering rod (14) to rotate.

10. The building decoration wall painting device according to claim 9, characterized in that: The steering assembly (20) comprises: A steering motor (21) is arranged on the movable plate (11); A rotating rod (22), one end of which is fixed to the output end of the steering motor (21); A driven rod (23), one end of which is hinged to the steering rod (14), and the other end of which is hinged to an end of the rotating rod (22) away from the steering motor (21).

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